Improved blind-fastener



UNITED STATES PATENT*y OFFICE.

Gr. K. DEARBORN, OF SOUTH BOSTON, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND C. M. BROMWIGK, OF SAME PLACE.

IMPROVD BLINDg- FASTENE'R..

-Speciication forming part of Letters Patent No. 50,532, dated October 17, 1865.

To all whom it may concern:

Be it known that I, Gr. K. DEARBORN, of South Boston, ini the county ot' Suffolk and State of Massachusetts, have invented a new and useful Improvement in Blind-Fasteuings;

and I do hereby declare that the following is a full, clearfand exact description thereof', which will enable others skilled iu the art to make and' use the same, reference being had to the accompanying drawings, forming part of this specitica-tion.

The present invention consists in placing within the lower` cross-bar of the outside frame of a window-blind, and projecting in a vertical planefrom its under side, a swingingr spring plate orcatchywhich at its'outer end engages t with the lxed hook or staple used on the window-sillor the exterior ot' the house, according as the blind is closed or opened, and with regard to which, within the side ofthe said bar, and projecting outward therefrom, a horizontal lever-handle is so arranged that by pulling` the handle in the proper direction the plate is caused to he disengaged from the xed staple,

outside wall of a house; and Fig. 2, a front` elevation of a portion of a blind, showing'tha partinlwhich the locking device is inserted in section.-

- 'ara iu-the drawings represent the wall of a house; '11, awindowffr'ame inserted therein in any of the ordinary modes; and v a blind hung hy hinges `d upon onesi'de of thew'indow-frame, so as to be swung toward orfrom the saine, as may be desired; f, the window-sill, in whichv is inserted or fastened, in any proper manner, a hook or staple, g; and h, a hook inserted or driven into the wall c, the twoA hooks g and h being made of such-a shape and placed in the proper positions for the fastening device now about to be described, to interlock with, according as the blindis opened or closed.

Placed vertically within the lower cross-bar, l, of the blind c, and projecting outward from its lower edge, m, asu'flicient distance to engage with both the hooks g ot' the window-sill and It of the wall, is a thin plate or catch, n, hung upon pivots oto the bar l, against thev upper end or portion, p, ot' which bears the inner end, q, of a horizontal lever-handle, 1', turning upon a fulcrnm at sin the side ofthe blind, and extending along upon the outside of the same, by the pulling ot' which handle away from the blind the catch piece or plate is made tao-turn upon its pivots iu-theproper-direction to cause its lower end to be disengaged from the fastening-hook of the window-sill orwall, according as the case may be, thusleaving the blind free to be opened or closed at pleasure, a bent spring, secured at one end to the blind-frame and bearing by the other upon the catch-plate, throwing it and the handle back to their original positions the moment the hand is withdrawn therefrom, and also serving to force and retain the catch within the fasteninghooks, as is evident withoutfurther description. l In lieu of arrangingrrtbe springaz,` so as to bear upon the catch-plate, as described, it can be attached to thej'leveiwhandle as well, and

other forms of springs may be used other than that described; also, there are various forms in which the catch-plate and lever-handle can be made and arranged with regard to each other, and therefore I donot intend toilimit myself to the previous forms andarrangement herein specified. brief' -Y I -claim as new and desire to secure tersPatent-- f The combination of the catch-plate n and the lever r or their equivalents, arranged together' and operating substantially in the manneralldv for the purpose specified.l 

